Download or read book Interactions of Oppositely Charged Surfactants and Polyelectrolytes in Aqueous Solutions and Gels written by Yakov Lapitsky and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixtures of oppositely charged surfactants and polyelectrolytes are of great interest to both industry and academia. Their applications range from household products to drug and gene delivery to the synthesis of novel materials. Their suitability for such a broad range of uses stems from their strong propensity to bind to one another where, depending on the strength and cooperativity of this adsorption process, surfactant/polyelectrolyte mixtures can have a broad range of useful physicochemical properties. This interplay between molecular-scale interactions and bulk properties makes the characterization of surfactant/polyelectrolyte binding a problem of great importance. Experimental determination of the binding isotherm is normally measured using a surfactant ion specific electrode method that requires time consuming experiments with sensitive, custom built equipment, which is not available in most laboratories. Thus, the first objective of this dissertation aims to develop a simple indirect method for approximating cooperative surfactant/polyelectrolyte binding isotherms using isothermal titration calorimetry (ITC). The Satake-Yang adsorption model is used to fit the binding constant (Ku), cooperativity parameter (u), and molar enthalpies of cooperative and non-cooperative surfactant adsorption to the ITC data. This approach is investigated using two surfactant/polyelectrolyte mixtures: sodium perfluorooctanoate (FC7) and N, N, N-trimethylammonium derivatized hydroxyethyl cellulose (UCARE [TM] Polymer JR-400), where the binding behavior is in good agreement with the Satake-Yang model, and dodecyltrimethylammonium bromide (DTAB) and poly(styrene sulfonate) (NaPSS), which deviates dramatically from model behavior. These case studies demonstrate that in order to apply the indirect ITC method of binding isotherm determination the surfactant/polyelectrolyte adsorption process must have no more than two dominant binding states. Thus, the technique works well for the FC7/JR-400 mixture but fails in the case of the DTAB/NaPSS adsorption (although its mode of failure in the case of DTAB/NaPSS offers insight into the multiple-binding-state adsorption mechanism of this non-model system). One typical macroscopic consequence of the abovementioned surfactant/polyelectrolyte binding is associative phase separation, wherein the concentrated phase is a viscous liquid, gel, or precipitate. The second objective of this dissertation exploits this phenomenon to form ordered gel phases that form particles (ranging from a few microns to a few millimeters in diameter), fibers, or planar sheets on a solid substrate. (Abstract shortened by UMI.).
Download or read book Interactions of Surfactants with Polymers and Proteins written by E. Desmond Goddard and published by CRC Press. This book was released on 2018-01-18 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interactions of Surfactants with Polymers and Proteins covers work done in this area over the last 30 years and examines in detail the physico-chemical, microstructural, and applications aspects of interactions of surfactants with polymers and proteins in bulk surfaces and at interfaces. The physical chemistry of individual components (surfactants, polymers, and proteins) is discussed, and extensive coverage of interactions of surfactants with uncharged, oppositely charged, and hydrophobe modified polymers is provided. Other topics addressed include water soluble and insoluble keratinous proteins, the principles and applications of fluorescence spectroscopy, the physical properties and microstructural aspects of polymer/protein-surfactant complexes, and implications of surfactant interactions with polymers and proteins in practical systems. Interactions of Surfactants with Polymers and Proteins provides a wealth of information for chemists involved in a number of different research areas, including cosmetics, pharmaceutics, foods, paints, pigments, lubrication, ceramics, minerals/materials processing, and biological systems.
Download or read book Nanoscience written by Victor M. Starov and published by CRC Press. This book was released on 2011-06-03 with total page 1610 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common perception is that nanoscience is something entirely new, that it sprung forth whole and fully formed like some mythological deity. But the truth is that like all things scientific, nanoscience is the natural result of the long evolution of scientific inquiry. Following a historical trail back to the middle of the 19th century, nanoscience is the inborn property of colloid and interface science. What’s important today is for us to recognize that nanoparticles are small colloidal objects. It should also be appreciated that over the past decades, a number of novel nanostructures have been developed, but whatever we call them, we cannot forget that their properties and behavior are still in the realm of colloid and interface science. However one views it, the interest and funding in nano-science is a tremendous opportunity to advance critical research in colloid chemistry. Nanoscience: Colloidal and Interfacial Aspects brings together a prominent roster of 42 leading investigators and their teams, who detail the wide range of theoretical and experimental knowledge that can be successfully applied for investigating nanosystems, many of which are actually well-known colloidal systems. This international grouping of pioneering investigators from academia and industry use these pages to provide researchers of today and tomorrow with a full examination of nano-disperse colloids, homogeneous and heterogeneous nano-structured materials (and their properties), and shelf-organization at the nano-scale. This cutting-edge reference provides information on investigations into non-linear electrokinetic phenomena in nano-sized dispersions and nano-sized biological systems. It discusses application aspects of technological processes in great detail, providing scientists and engineers across all fields with authoritative commentary on colloid and interface science operating at the nanoscale. Nano-Science: Colloidal and Interfacial Aspects provides an authoritative resource for those wanting to familiarize themselves with current progress as well as for those looking to make their own impact on the development of new technologies and practical applications in fields as diverse as medicine, materials, and environmental science to name but a few. Whether you call the technology nano or colloids, the field continues to be ripe with opportunity.
Download or read book Interactions of surfactants with polymers and proteins written by Errol Desmond Goddard and published by CRC. This book was released on 1992 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interactions of Surfactants with Polymers and Proteins covers work done in this area over the last 30 years and examines in detail the physico-chemical, microstructural, and applications aspects of interactions of surfactants with polymers and proteins in bulk surfaces and at interfaces. The physical chemistry of individual components (surfactants, polymers, and proteins) is discussed, and extensive coverage of interactions of surfactants with uncharged, oppositely charged, and hydrophobe modified polymers is provided. Other topics addressed include water soluble and insoluble keratinous proteins, the principles and applications of fluorescence spectroscopy, the physical properties and microstructural aspects of polymer/protein-surfactant complexes, and implications of surfactant interactions with polymers and proteins in practical systems. Interactions of Surfactants with Polymers and Proteins provides a wealth of information for chemists involved in a number of different research areas, including cosmetics, pharmaceutics, foods, paints, pigments, lubrication, ceramics, minerals/materials processing, and biological systems.
Download or read book DNA Interactions with Polymers and Surfactants written by Rita Dias and published by John Wiley & Sons. This book was released on 2008-07-14 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad overview of the interaction of DNA with surfactants and polymers Due to the potential benefits of biotechnology, interest in the interaction between DNA and surfactants and polymers has become increasingly significant. Now, DNA Interactions with Polymers and Surfactants provides an extensive, up-to-date overview of the subject, giving readers a basis for understanding the factors leading to complexation between DNA and different cosolutes, including metal ions, polyelectrolytes, spermine, spermidine, surfactants and lipids, and proteins. Topical coverage includes: Polyelectrolytes, physico-chemical aspects and biological significance Solution behavior of nucleic acids Single DNA molecules: compaction and decompaction Interaction of DNA with surfactants and cationic polymers Interactions of histones with DNA DNA-DNA interactions The hydration of DNA-amphiphile complexes DNA-surfactant/lipid complexes at liquid interfaces DNA and DNA-surfactant complexes at solid surfaces The role of correlation forces for DNA-cosolute interactions Simulations of polyions Cross-linked DNA gels and gel particles DNA as an amphiphilic polymer Lipid-DNA interactions Covering both theoretical and practical aspects of the subject, DNA Interactions with Polymers and Surfactants is an ideal resource for chemists and biochemists working in gene and DNA delivery research in industry and academia, as well as for cell biologists, chemical engineers, molecular biologists, and development biologists in the pharmaceutical industry.
Download or read book Complex Formation Between Cationic Cellulose Polymers and Oppositely Charged Surfactants in Aqueous Media written by Sudhaa Srinivasan and published by . This book was released on 2009 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT:Mixtures of polymers and surfactants are widely used in aqueous media to provide structure, solubilization domains, and/or colloidal stability. Underlying these functions are inter- and intra-molecular interactions that depend on the nature of the polymers and the type of surfactants. We have investigated here the phase behavior of cationic cellulose derivatives in aqueous media upon addition of oppositely charged surfactant, sodium dodecyl sulfate (SDS). The solution behavior and interactions between the polyelectrolyte and the surfactant can be profoundly affected by the polyelectrolyte charge density and hydrophobic modification, as well as by the presence in water of polar organic solvents (cosolvents).
Download or read book Surfactants in Solution written by K.L. Mittal and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume chronicles the proceedings of the 8th International Symposium on Surfactants in Solution (SIS) held in Gainesville, FL, June 10-15, 1990. This series of symposia have been smoothly running since 1976, but the appellation "Surfactants in Solution" was used for the first time in 1982 in Lund. Since then our logo "SIS" has become very familiar to everyone involved in surfactants. In Lund the meeting was billed as the Fourth International Symposium on Surfactants in Solution. Earlier three events were held under different rubrics, but proceedings of all these symposia, except the 7th SIS held in Ottawa in 1988, have been properly documented. As a matter of fact so far 10 volumes have appeared under the title "Surfactants in Solution". 1,2,3 The program for the 9th SIS was very comprehensive and many ramifications of surfactants were covered, and it was a veritable international event. It contained a total of 384 papers by 869 authors from practically every corner of our planet. Just the sheer number of papers is a testimonial to the high tempo of research and tremendous interest in this wonderful class of materials. As in the past, there were plenary lectures (5), invited talks (37), oral presentations (195) and poster presentations (147). The plenary lectures were given by Prof. J. Th. G. Overbeek, Prof. C. A. Bunton, Prof. H. Ti Tien and Dr. J. Swalen. The lecture by Prof. Overbeek, the doyen of surface and colloid science, was a real treat.
Download or read book Handbook of Surface and Colloid Chemistry written by K. S. Birdi and published by CRC Press. This book was released on 2015-06-25 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the Handbook of Surface and Colloid Chemistry informs you of significant recent developments in the field. It highlights new applications and provides revised insight on surface and colloid chemistry's growing role in industrial innovations. The contributors to each chapter are internationally recognized experts. Several chapter
Download or read book Polymeric Biomaterials written by Severian Dumitriu and published by CRC Press. This book was released on 2013-01-17 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomaterials have had a major impact on the practice of contemporary medicine and patient care. Growing into a major interdisciplinary effort involving chemists, biologists, engineers, and physicians, biomaterials development has enabled the creation of high-quality devices, implants, and drug carriers with greater biocompatibility and biofunctiona
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Science written by and published by . This book was released on 1994 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aqueous Polymer Cosolute Systems written by Dan F. Anghel and published by Springer. This book was released on 2003-09-05 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is dedicated to Doctor Shuji Saito to commemorate the 50th anniversary of his first paper on polymer-surfactant interaction published in the former Kolloid Zeitschrift, now called Colloid and Polymer Science. It is a collection of papers written by experts who contributed to the progress in this field. The papers introduce typical problems associated with systems of nonionic polymers and ionic surfactants, polymers and surfactants of opposite charge, charged polymers and nonionic surfactants, and of surfactant-responsive polymer gels. Papers on mixtures of natural polymers and surfactants, drugs, dyes and other cosolutes are also included. The book is an indispensable tool for physical, surface, polymer and colloid chemists; material scientists; chemical physicists; biochemists and biophysicists; and advanced undergraduate and graduate students in these disciplines.
Download or read book Surfactants and Polymers in Aqueous Solution written by Krister Holmberg and published by Wiley. This book was released on 2002-11-22 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many industrial formulations such as detergents, paints, foodstuff and cosmetics contain both surfactants and polymers and their interaction govern many of the properties. This book is unique in that it discusses the solution chemistry of both surfactants and polymers and also the interactions between the two. The book, which is based on successful courses given by the authors since 1992, is a revised and extended version of the first edition that became a market success with six reprints since 1998. Surfactants and Polymers in Aqueous Solution is broad in scope, providing both theoretical insights and practical help for those active in the area. This book contains a thorough discussion of surfactant types and gives information of main routes of preparation. A chapter on novel surfactants has been included in the new edition. Physicochemical phenomena such as self-assembly in solution, adsorption, gel formation and foaming are discussed in detail. Particular attention is paid to the solution behaviour of surfactants and polymers containing polyoxyethylene chains. Surface active polymers are presented and their interaction with surfactants is a core topic of the book. Protein-surfactant interaction is also important and a new chapter deals with this issue. Microemulsions are treated in depth and several important application such as detergency and their use as media for chemical reactions are presented. Emulsions and the choice of emulsifier is discussed in some detail. The new edition also contains chapters on rheology and wetting. Surfactants and Polymers in Aqueous Solution is aimed at those dealing with surface chemistry research at universities and with surfactant formulation in industry.
Download or read book Polyelectrolytes and Nanoparticles written by Joachim Koetz and published by Springer Science & Business Media. This book was released on 2007-02-20 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lab manual guides chemists through demonstrations of synergistic effects between polyelectrolytes and nanoparticles. After a short introduction into the field of polyelectrolytes and polyelectrolyte characterization, the book discusses the role of polyelectrolytes in the process of nanoparticle formation. The book also explains methods for characterization of the polyelectrolyte-modified nanoparticles.
Download or read book Ionic Interactions in Natural and Synthetic Macromolecules written by Alberto Ciferri and published by John Wiley & Sons. This book was released on 2012-01-04 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive study of the subject of ionic interactions in macromolecules. The first parts of the book review and analyze the conventional treatments of fixed charges (e.g. in polyelectrolytes and polyampholytes), including screening and condensation by mobile ions. The interaction of ions with less polar sites on the macromolecule (e.g. amide bonds), and the origin of the lyotropic effects (focusing on binding versus condensation) will also be extensively addressed. The book also explores complex micellar organizations involving charged macromolecules (e.g. DNA) and low-molecular-weight ampholytes and strong protein associations. The resulting structures are relevant to a variety of functional biological systems and synthetic analogs. The contribution of electrostatic and hydrophobic interaction to the stability of proteins and other supramolecular structures will also be analyzed. There are chapters on applications such as deionization and cosmetic formulation. This 21-chapter book is divided into three sections: Fundamentals Mixed Interactions Functions and Applications
Download or read book Surfactants and Polymers in Aqueous Solution written by Bo Jönsson and published by Wiley. This book was released on 2000-01-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique book which discusses the solution chemistry of surfactants and polymers, presenting both the theory of surfactant and polymer interactions and also giving practical help for workers in this area. Surfactants are used together with polymers in a wide range of applications such as detergents, paints, paper coatings, food, pharmacy and cosmetics. Together the surfactant and polymer provide the stability, rheology, etc., needed for specific application. Hence the need for knowledge about physicochemical properties of both surfactants and polymers and polymer-surfactant interactions, to enhance formulation work. This book, based on successful courses run by the authors, brings the two topics together to enable readers to gain a good understanding of the solution behaviour of surfactant-polymer combinations. It includes a thorough description of surfactant types, including their main synthetic routes, and discusses physicochemical phenomena such as self-assembly, adsorption, gel formation and foaming. Particular attention is paid to the solution behaviour of surfactants and polymers containing polyoxyethylene chains. Surface-active polymers are then presented and their interaction with surfactants is a core topic of the book. The choice of surfactant for emulsions and microemulsions is treated in depth and important applications of microemulsions, such as detergency and enhanced oil recovered are presented. This book will be invaluable for scientists and engineers involved in surfactant production and formulation as well as students.
Download or read book Polyelectrolyte Complexes in the Dispersed and Solid State II written by Martin Müller and published by Springer. This book was released on 2013-08-23 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyelectrolyte Complexes for Tailoring of Wood Fibre Surfaces. Polyelectrolyte Complexes in Flocculation Applications. Spontaneous Assembly and Induced Aggregation of Food Proteins. Polyelectrolyte Complexes of DNA and Polycations as Gene Delivery Vectors. Sizing, Shaping and Pharmaceutical Applications of Polyelectrolyte Complex Nanoparticles.
